Bechara's Gambling Task

Contents

In this test, subject chooses from one of four decks, each having a different reward schedule. This task is based on Bechara et al's so-called "Iowa Gambling task"

In this procedure, subjects are given $2000 to begin. On each trial, they are given the choice of four decks,
and after each card, they are given a reward of some amount; after some cards, they are given
a reward and pay a penalty.

The penalty/reward structure is identical to that in Bechara et al.
with 40 cards per deck, and the identical reward structure.
When 100 cards have been selected, the task is complete.

Unlike the real-world version, the deck is just rotated on each
draw, so that the top card moves to the bottom of the 40-card deck,
and so the sequence will repeat after 40 cards in the original order,
rather than becoming exhausted after 40 draws.